Phone numbers in Danville, California
Danville has 38 phone prefixes in area code 925.
Biggest holders: AT&T (local phone), Level 3 (Lumen), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 24%
- Local phone company 32%
- Internet / business phone carrier 42%
- Paging service 3%
Every prefix in Danville
Search the first six digits of a number in this list. If it's here, the number started in Danville with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 925-205 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 925-208 | Teleport Communications America | Internet / business phone carrier | – |
| 925-217 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 925-263 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 925-272 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 925-309 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 925-314 | AT&T (local phone) | Local phone company | – |
| 925-345 | American Messaging Services | Paging service | – |
| 925-362 | AT&T (local phone) | Local phone company | – |
| 925-389 | AT&T Mobility | Mobile carrier | 2001 |
| 925-406 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 925-486 | Onvoy | Internet / business phone carrier | 2024 |
| 925-502 | AT&T Mobility | Mobile carrier | 2022 |
| 925-540 | AT&T Mobility | Mobile carrier | 2024 |
| 925-552 | AT&T (local phone) | Local phone company | – |
| 925-553 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 925-575 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 925-594 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 925-648 | AT&T (local phone) | Local phone company | – |
| 925-678 | Tpx Communications | Internet / business phone carrier | – |
| 925-683 | AT&T Mobility | Mobile carrier | – |
| 925-718 | Onvoy | Internet / business phone carrier | – |
| 925-725 | Tpx Communications | Internet / business phone carrier | – |
| 925-733 | Fractel | Internet / business phone carrier | 2021 |
| 925-736 | AT&T (local phone) | Local phone company | – |
| 925-743 | AT&T (local phone) | Local phone company | – |
| 925-791 | Tpx Communications | Internet / business phone carrier | 2001 |
| 925-820 | AT&T (local phone) | Local phone company | – |
| 925-831 | AT&T (local phone) | Local phone company | – |
| 925-837 | AT&T (local phone) | Local phone company | – |
| 925-838 | AT&T (local phone) | Local phone company | – |
| 925-854 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 925-855 | AT&T (local phone) | Local phone company | – |
| 925-856 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 925-886 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 925-915 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 925-964 | AT&T (local phone) | Local phone company | – |
| 925-984 | MetroPCS (T-Mobile) | Mobile carrier | – |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.